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Comprehensive Study Guide- Solved Exam Q&A
BIO 152 PRACTICE EXAM 4 |2025-2026 LATEST UPDATED| REAL EXAM
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100% VERFIED |
ALREADY GRADED A+
1. What characteristics make a prokaryote a prokaryote?: no organelles,
circular chromosomes, no nucleus, no internal cytoskeleton, unicellular, and
they have a cellular membrane
2. What characteristics make a eukaryote a eukaryote?: organelles
(mitochondria, chloroplast, nucleus), and linear chromosomes
3. What is the approximate timeline for the evolution of life on earth?: origin
of earth, first prokaryotes, oxygen accumulates, eukaryotes, multicellular
eukaryotes, first animal, first fossil, Cambrian Explosion, first true plants and
colonization of land, non-avian dinosaurs - mass extinction, first primate, first
humans
4. What is adaptive radiation?: an unusually rapid period of speciation in a
group, accelerated by natural selection
5. What is an example of adaptive radiation?: the absence of dinosaurs gave
opportunities for diversification of mammals
6. What are the 2 domains of prokaryotes?: archaea and bacteria
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Comprehensive Study Guide- Solved Exam Q&A
7. How does archaea differ from bacteria?: has a different lipid in membranes
and a type of RNA polymerase and ribosomes
8. What are the 3 Archae and what is special about them?: haloquadratum
walsbyi, nanoarcheum equitans, and methanopyrus kandleri (they can survive
conditions lethal to most other life)
9. What is a "protist"?: a type of simple eukaryote, some unicellular and some
multicellular; not an animal, plant, or fungi
10. What is endosymbiosis?: an organism that lives within the body or cells of
another organism
11. Where did eukaryotes come from? AKA the Endosymbiotic Theory: a cell
consumed another cell but didn't digest it, it let it reproduce inside of it, and they
lived together and over time became the same organism
12. What forms do eukaryotes include?: unicellular forms and simple and
complex multicellular forms
13. What did the creation of eukaryotes lead to?: diversity
14. What features do "protists" have in common?: simple morphology
(structure) and most are aquatic
15. What are the two major functional categories of protists?: photoautotrophs
and chemoheterotrophs
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Comprehensive Study Guide- Solved Exam Q&A
16. What are photoautotrophs?: organisms that can utilize light energy from sun-
light
17. What is an example of a photoautotroph?: algae
18. What are chemoheterotrophs?: organisms that get their energy source and
carbon source from organic sources
19. What is an example of a chemoheterotroph?: protozoa
20. What are ways that "protists" affect us?: underlie most aquatic life, some are
pathogens, protist symbionts
21. What is a symbiosis?: a tight linkage between two species
22. What is a symbiont?: a member of a symbiosis
23. What do all complex multicellular organisms have?: highly developed
molecular mechanisms for cell adhesion and three-dimensional body
organization 24. What does complex multicellularity allow?: specialization;
ex. cells into tissues, tissues into organs
25. How do animals communicate with neighboring cells?: gap junctions - ring
of proteins
26. How do plants communicate with neighboring cells?: plasmodesmata -
membrane-lined holes through cell walls
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Comprehensive Study Guide- Solved Exam Q&A
27. How do plant and animals communicate with distant cells?: chemical
signals (slower, hormones) and electrical signals (faster, neurons in animals)
28. How do cells transport to near cells?: diffusion
29. How do cells transport to distant cells?: bulk flow
30. What is bulk flow?: movement of molecules due to pressure differences
31. What is an example of bulk flow in animals?: circulatory system
32. What is an example of bulk flow in plants?: vascular system
33. What are the 4 nutritional categories?: autotrophs, chemotrophs,
heterotrophs, and phototrophs
34. What is an autotroph?: carbon from CO2
35. What is a chemotroph?: energy from chemical compounds
36. What is a heterotroph?: carbon from other organisms
37. What is a phototroph?: energy from sunlight
38. What nutritional category are ALL eukaryotes?: photoautotrophs or
chemoheterotrophs
39. Which of the following is true?
A. a radiation is "adaptive" if it was caused mainly by genetic drift
B. to be a mass extinction, all species in one area must go extinct
C. any speciation event can be referred to as an adaptive radiation
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Comprehensive Study Guide- Solved Exam Q&A
BIO 152 PRACTICE EXAM 4 |2025-2026 LATEST UPDATED| REAL EXAM
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100% VERFIED |
ALREADY GRADED A+
1. What characteristics make a prokaryote a prokaryote?: no organelles,
circular chromosomes, no nucleus, no internal cytoskeleton, unicellular, and
they have a cellular membrane
2. What characteristics make a eukaryote a eukaryote?: organelles
(mitochondria, chloroplast, nucleus), and linear chromosomes
3. What is the approximate timeline for the evolution of life on earth?: origin
of earth, first prokaryotes, oxygen accumulates, eukaryotes, multicellular
eukaryotes, first animal, first fossil, Cambrian Explosion, first true plants and
colonization of land, non-avian dinosaurs - mass extinction, first primate, first
humans
4. What is adaptive radiation?: an unusually rapid period of speciation in a
group, accelerated by natural selection
5. What is an example of adaptive radiation?: the absence of dinosaurs gave
opportunities for diversification of mammals
6. What are the 2 domains of prokaryotes?: archaea and bacteria
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Comprehensive Study Guide- Solved Exam Q&A
7. How does archaea differ from bacteria?: has a different lipid in membranes
and a type of RNA polymerase and ribosomes
8. What are the 3 Archae and what is special about them?: haloquadratum
walsbyi, nanoarcheum equitans, and methanopyrus kandleri (they can survive
conditions lethal to most other life)
9. What is a "protist"?: a type of simple eukaryote, some unicellular and some
multicellular; not an animal, plant, or fungi
10. What is endosymbiosis?: an organism that lives within the body or cells of
another organism
11. Where did eukaryotes come from? AKA the Endosymbiotic Theory: a cell
consumed another cell but didn't digest it, it let it reproduce inside of it, and they
lived together and over time became the same organism
12. What forms do eukaryotes include?: unicellular forms and simple and
complex multicellular forms
13. What did the creation of eukaryotes lead to?: diversity
14. What features do "protists" have in common?: simple morphology
(structure) and most are aquatic
15. What are the two major functional categories of protists?: photoautotrophs
and chemoheterotrophs
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Comprehensive Study Guide- Solved Exam Q&A
16. What are photoautotrophs?: organisms that can utilize light energy from sun-
light
17. What is an example of a photoautotroph?: algae
18. What are chemoheterotrophs?: organisms that get their energy source and
carbon source from organic sources
19. What is an example of a chemoheterotroph?: protozoa
20. What are ways that "protists" affect us?: underlie most aquatic life, some are
pathogens, protist symbionts
21. What is a symbiosis?: a tight linkage between two species
22. What is a symbiont?: a member of a symbiosis
23. What do all complex multicellular organisms have?: highly developed
molecular mechanisms for cell adhesion and three-dimensional body
organization 24. What does complex multicellularity allow?: specialization;
ex. cells into tissues, tissues into organs
25. How do animals communicate with neighboring cells?: gap junctions - ring
of proteins
26. How do plants communicate with neighboring cells?: plasmodesmata -
membrane-lined holes through cell walls
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Comprehensive Study Guide- Solved Exam Q&A
27. How do plant and animals communicate with distant cells?: chemical
signals (slower, hormones) and electrical signals (faster, neurons in animals)
28. How do cells transport to near cells?: diffusion
29. How do cells transport to distant cells?: bulk flow
30. What is bulk flow?: movement of molecules due to pressure differences
31. What is an example of bulk flow in animals?: circulatory system
32. What is an example of bulk flow in plants?: vascular system
33. What are the 4 nutritional categories?: autotrophs, chemotrophs,
heterotrophs, and phototrophs
34. What is an autotroph?: carbon from CO2
35. What is a chemotroph?: energy from chemical compounds
36. What is a heterotroph?: carbon from other organisms
37. What is a phototroph?: energy from sunlight
38. What nutritional category are ALL eukaryotes?: photoautotrophs or
chemoheterotrophs
39. Which of the following is true?
A. a radiation is "adaptive" if it was caused mainly by genetic drift
B. to be a mass extinction, all species in one area must go extinct
C. any speciation event can be referred to as an adaptive radiation
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